Can someone please help a guy out, i have gas coming out of my line on the bottom of my carb. it wont start by electric start it has to be pulled started, when and if it does crank it runs real rough. it was the carb on the left . if you are setting on the seat, i took it apart and switched the valve seat and needle valve to the other carb now the one on the right leaks does that mean i need a new valve seat and needle valve or do i need to adjust my float. any help will be nice.
Thanks

 

i just tapped the sid of my carb with a scrue driver and it stopped. or u might need to rebuild the carb

 

It's the float. It's stuck down so fuel just keeps flowing into the carb. It could have come from running out of gas (and binding the float against the side of the bowl), or just gunk in the valve. Try tapping it loose, if that doesn't fix it, or if it happens again, you will need to take it apart and free up whatever is making that valve stay open.